Device for detecting leakage of chemical process gas

Abstract

The utility model discloses a device for detecting chemical process gas leakage, which belongs to the field of pipeline detection and comprises a valve body. Sealing rings are embedded into flange plates on the two sides of the valve body respectively; the opening and closing states of the valve body are controlled by an electric actuator; the assembly part is embedded in the valve wall on one side of the valve body; the early warning mechanism is arranged on the outer wall of the valve body; the air pressure detector is detachably arranged in the assembly part and is electrically connected with the early warning mechanism; the assembly part comprises a mounting frame embedded in the valve wall on one side of the valve body. The two mounting holes are respectively formed in the mounting frame, and the air pressure detector is detachably arranged in one of the mounting holes through threads. According to the device for detecting the leakage of the chemical process gas, the gas pressure detector is matched with the early warning mechanism, which pipe joint leaks can be known at the first time and closed, the efficiency of finding a leakage point by a worker can be improved, meanwhile, the leaked pipe joint can be closed, and the working efficiency is improved. And excessive property loss or potential safety hazards are avoided.

Description

TECHNICAL FIELD

[0001] The utility model belongs to pipeline detection field, concretely relates to a device for detecting chemical process gas leakage. BACKGROUND

[0002] In chemical production process, many process need to use gas even high-risk gas, when pipeline aging, improper installation, operation error and other reasons, gas leakage may cause explosion, poisoning, fire and other major accidents, cause serious threat to personnel life and property, therefore, gas leakage device emerges as the times require.

[0003] The chemical process gas leakage device on the market generally is installed at the pipeline connection, if the gas pipeline length is longer, the staff can know that the pipeline leaks after leakage, but cannot confirm which specific interval section has a problem, needs to spend time to investigate, also cannot close the pipeline of corresponding interval section in time, still can cause security risks due to not timely handling, therefore, a kind of chemical process gas leakage device is proposed to solve the above problems. UTILITARIAN CONTENT

[0004] In view of one or more of the above defects or improvement needs of prior art, the utility model provides a device for detecting chemical process gas leakage, which has the advantages of good use effect.

[0005] To achieve the above object, the utility model provides a device for detecting chemical process gas leakage, which comprises a valve body, sealing rings are embedded on the flanges on both sides of the valve body, and the valve body is controlled by an electric actuator to open and close.

[0006] An assembly part is embedded on one side of the valve wall of the valve body.

[0007] An early warning mechanism is arranged on the outer wall of the valve body.

[0008] A gas pressure detector is detachably arranged in the assembly part and electrically connected with the early warning mechanism.

[0009] The assembly part comprises a mounting bracket embedded on one side of the valve wall of the valve body, two mounting holes are arranged in the mounting bracket, the gas pressure detector is detachably arranged in one of the mounting holes through screw threads, a rotating rod is rotatably arranged in the mounting bracket, the rotating rod and the mounting bracket are rotationally sealed by a rotating seal plug, the rotating rod penetrates the mounting bracket at both ends and is located between the two mounting holes, a rotating plate is arranged at the bottom end of the mounting bracket, the rotating plate is a fan-shaped structure and closes the bottom of one of the mounting holes, a sealing gasket is arranged on the rotating plate and tightly abuts against the bottom of the mounting bracket to achieve sliding sealing between the rotating plates, and a fixing screw is arranged on the mounting bracket to fix the rotating rod.

[0010] The assembling piece can be used for switching the use state of the air pressure detector, so that the worker can replace the air pressure detector without affecting the normal use of the device.

[0011] Further, the early warning mechanism comprises a mounting box arranged on the valve body, an intelligent controller and a buzzer arranged in the mounting box, an antenna and an early warning lamp arranged on the outer wall of the mounting box, and the air pressure detector, the buzzer, the antenna and the early warning lamp are electrically connected with the intelligent controller respectively.

[0012] Further, the number of the assembling pieces is two, and the assembling pieces are embedded on the valve walls on the two sides of the valve body respectively.

[0013] Further, a cover is arranged at the opening of the mounting box, and the cover is hinged to the mounting box.

[0014] Further, a sound passage hole is arranged at the position close to the buzzer of the mounting box, and the sound generated by the buzzer can pass through the sound passage hole.

[0015] Overall, compared with the prior art, the above technical scheme conceived by the utility model has the beneficial effects including:

[0016] The device for detecting leakage of chemical process gas of the utility model can know which pipe section appears leakage and is closed in the first time through cooperation between the air pressure detector and the early warning mechanism, can improve the efficiency of the worker to find the leakage point, and can also close the leakage pipe section, so that too much property loss or safety hazard is avoided. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a structural schematic view of the utility model;

[0018] Figure 2 It is an embodiment schematic view of the valve body 1 and the pipeline after dismounting of the utility model;

[0019] Figure 3 It is an assembling piece sectional structure schematic view of the utility model;

[0020] Figure 4 It is an embodiment schematic view of the utility model after the cover is opened.

[0021] In all the drawings, same reference signs represent same technical features, specifically: 1, valve body; 2, flange plate; 3, sealing ring; 4, electric actuator; 5, assembling piece; 51, mounting frame; 52, mounting hole; 53, rotating rod; 54, rotating sealing plug; 55, rotating plate; 56, sealing gasket; 57, fixed screw rod; 6, early warning mechanism; 61, mounting box; 62, intelligent controller; 63, buzzer; 64, antenna; 65, early warning lamp; 7, air pressure detector; 8, cover; 9, sound passage hole. DETAILED DESCRIPTION

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figures 1-4 The device for detecting chemical process gas leaks in this embodiment, through the cooperation between the gas pressure detector 7 and the early warning mechanism 6, can immediately identify which pipe section is leaking and shut it down. This improves the efficiency of staff in finding the leak point and can also seal off the leaking pipe section to avoid excessive property damage or safety hazards.

[0024] Specifically, it includes a valve body 1; sealing rings 3 are embedded on the flanges 2 on both sides of the valve body 1; the valve body 1 is controlled by an electric actuator 4 to control its opening and closing state;

[0025] Assembly 5 is embedded in the valve wall on one side of valve body 1;

[0026] The warning mechanism 6 is installed on the outer wall of the valve body 1;

[0027] The barometric pressure detector 7 is detachably mounted in the assembly 5 and electrically connected to the warning mechanism 6;

[0028] Accessory 5 can be used to switch the operating status of barometer 7, allowing staff to replace barometer 7 without affecting the normal operation of the device.

[0029] In this embodiment, before use, multiple units of this device can be assembled at the connection between each two pipe sections. The specific assembly structure is as follows: Figure 1 Each device's early warning mechanism 6 is connected to an external remote control center. During use, the air pressure detector 7 can detect the air pressure of the passing gas. If a leak occurs in the current pipe section, the air pressure detector 7 on the next device will detect a decrease in air pressure. By judging the air pressure difference detected by every two air pressure detectors 7, it is possible to determine which specific pipe section is leaking. At the same time, the early warning mechanism 6 controls the electric actuator 4 to close the valve body 1, so that both ends of the leaking pipe section are sealed off immediately, avoiding excessive property damage or safety hazards. Through the cooperation between the air pressure detector 7 and the early warning mechanism 6, it is possible to know which specific pipe section is leaking and close it off immediately, which can improve the efficiency of personnel in finding the leak point, and at the same time, it can also seal off the leaking pipe section to avoid excessive property damage or safety hazards.

[0030] Specifically, refer toFigure 3 The assembling part 5 comprises a mounting frame 51 embedded on one side of the valve wall of the valve body 1; two mounting holes 52 respectively formed in the mounting frame 51, the air pressure detector 7 is detachably arranged in one of the mounting holes 52 through screw thread; a rotating rod 53 rotatably arranged in the mounting frame 51; the rotating rod 53 and the mounting frame 51 are rotationally sealed through a rotating sealing plug 54, the rotating rod 53 penetrates the mounting frame 51 at both ends and is located between the two mounting holes 52; a rotating plate 55 arranged at the bottom end of the mounting frame 51, the rotating plate 55 is a fan-shaped structure and closes the bottom of one of the mounting holes 52; a sealing gasket 56 arranged on the rotating plate 55, the sealing gasket 56 is tightly attached to the bottom of the mounting frame 51 and is used to realize the sliding sealing between the rotating plate 55 and the rotating plate 55; a fixing screw 57 arranged on the mounting frame 51 and used to fix the rotating rod 53.

[0031] In this embodiment, when the air pressure detector 7 needs to be replaced or overhauled, a new air pressure detector 7 can be inserted into the other mounting hole 52, and then the rotating rod 53 is rotated, when the rotating plate 55 rotates, the use state of the two mounting holes 52 is switched, at this time, the bottom of the mounting hole 52 where the old air pressure detector 7 is located is closed, and the bottom of the mounting hole 52 where the new air pressure detector 7 is located is open, thereby completing the replacement process. By alternately using the two mounting holes 52, the air pressure detector 7 can be replaced without affecting the use of the device, avoiding the need to completely close the gas pipeline every time the air pressure detector 7 is replaced or detected, causing economic impact and affecting the efficiency of the overhaul.

[0032] Specifically, referring to Figure 4 The early warning mechanism 6 comprises a mounting box 61 arranged on the valve body 1; an intelligent controller 62 and a buzzer 63 arranged in the mounting box 61; an antenna 64 and an early warning lamp 65 arranged on the outer wall of the mounting box 61; the air pressure detector 7, the buzzer 63, the antenna 64 and the early warning lamp 65 are electrically connected with the intelligent controller 62 respectively.

[0033] In this embodiment, before use, the intelligent controller 62 is connected with the external remote control center through the antenna 64; the device is uniformly controlled by the external remote control center, when the air pressure detector 7 senses that the air pressure decreases, it will be sent to the external remote control center through the intelligent controller 62 and the antenna 64, so that the staff can know the state, at the same time, the buzzer 63 and the early warning lamp 65 remind the staff on site through sound and light which section of the pipe joint leaks.

[0034] Specifically, referring to Figure 3 The assembling part 5 is two in number and is embedded on the valve walls of the valve body 1 on both sides.

[0035] In the embodiment, by setting two assembling parts 5 and the air pressure detector 7 arranged in each assembling part 5, whether the device itself leaks can be judged by judging the air pressure difference between the two air pressure detectors 7, and the functionality of the device in actual use can be increased.

[0036] Specifically, referring to Figure 4 , the mounting box 61 is provided with a cover 8 at the opening, and the cover 8 is hinged to the mounting box 61.

[0037] In the embodiment, since the device is usually installed in a pipe gallery with more dust, the cover 8 can prevent dust from entering the mounting box 61 and causing short circuit of the internal electrical components.

[0038] Specifically, referring to Figure 4 , the mounting box 61 is provided with a sound hole 9 near the buzzer 63, through which the sound generated by the buzzer 63 can pass.

[0039] In the embodiment, the sound hole 9 can increase the penetration of the sound of the buzzer 63, so that it can be heard by the staff earlier.

[0040] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A device for detecting leaks of a chemical process gas, characterized in that It includes valve body (1), flange plate (2) embedded with sealing ring (3) on both sides of valve body (1), and valve body (1) controlled by electric actuator (4) to open and close. Assembly part (5) embedded in one side of valve body (1) wall. Early warning mechanism (6) arranged on the outer wall of valve body (1). Air pressure detector (7) arranged in assembly part (5) and electrically connected with early warning mechanism (6). Assembly part (5) includes mounting bracket (51) embedded in one side of valve body (1) wall, two mounting holes (52) respectively arranged in mounting bracket (51), air pressure detector (7) arranged in one of mounting holes (52) through screw thread, rotating shaft (53) arranged in mounting bracket (51), rotating shaft (53) and mounting bracket (51) sealed by rotating seal plug (54), rotating shaft (53) penetrating mounting bracket (51) and located between two mounting holes (52), rotating plate (55) arranged at the bottom of mounting bracket (51), rotating plate (55) being fan-shaped structure and closing the bottom of one of mounting holes (52), sealing gasket (56) arranged on rotating plate (55), sealing gasket (56) closely attached to the bottom of mounting bracket (51) and used for sliding sealing between rotating plate (55) and rotating plate (55), and fixing screw (57) arranged on mounting bracket (51) and used for fixing rotating shaft (53). Assembly part (5) can be used to switch the use state of air pressure detector (7), so that the staff can replace air pressure detector (7) without affecting the normal use of the device.

2. The apparatus for detecting a leak of a chemical process gas according to claim 1, wherein, Early warning mechanism (6) includes mounting box (61) arranged on valve body (1), intelligent controller (62) and buzzer (63) arranged in mounting box (61), antenna (64) and early warning lamp (65) arranged on the outer wall of mounting box (61), and air pressure detector (7), buzzer (63), antenna (64) and early warning lamp (65) electrically connected with intelligent controller (62) respectively.

3. The apparatus for detecting a leak of a chemical process gas according to claim 1, wherein The number of assembly parts (5) is two, and they are respectively embedded in the valve walls on both sides of valve body (1).

4. The apparatus for detecting a leak of a chemical process gas according to claim 2, wherein Cover (8) is arranged at the opening of mounting box (61), and cover (8) is hinged to mounting box (61).

5. The apparatus for detecting a leak in a chemical process gas according to claim 2, wherein Sound hole (9) is arranged near buzzer (63) of mounting box (61), through which the sound produced by buzzer (63) can pass.

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